Of course, Xiaomi can reverse charge the Huawei watch because Xiaomi supports reverse charging function.
< br >
Reverse charging: When connecting other devices, switch to the mobile power supply to discharge and charge other electronic devices.
< br >
When the mobile phone with reverse charging function detects that the OTG device supporting data exchange between devices is inserted, the mobile phone outputs voltage to the VBUS on the USB data cable and prompts for reverse charging.
Xiaomi wireless charger can be charged to Huawei, because the protocol of Xiaomi wireless charger is to support Huawei charger agreement, so it can be charged to Huawei